| Fact Group (Combination of Network and Hypercube) | |
| Network: | 309010 - Disclosure - Note I. Business Segments (http://www.abc.com/role/BusinessSegments) |
| Hypercube: | Business Segment Information [Table] (abc:BusinessSegmentInformationTable) |
| Slicers (applies to each fact value in each table cell) | |
| brm:ReportingEntityMeasure | 0000000001 (http://www.sec.gov/CIK) |
| us-gaap:CreationDateAxis | abc:AsReportedFebruary122011Member |
| dei:LegalEntityAxis | dei:EntityDomain |
| brm:Units | iso4217:USD |
| us-gaap:StatementBusinessSegmentsAxis | |||||
| brm:ConceptMeasure | Business Segments, All [Domain] | Business Segment Alpha [Member] | Business Segment B [Member] | Business Segment C [Member] | Business Segment D [Member] |
| Business Segment Information [Line Items] | |||||
| Business Segment Information [Hierarchy] | |||||
| Revenues | 10,000,000 | 4,000,000 | 2,000,000 | 2,000,000 | 2,000,000 |
| Operating Expenses | 3,000,000 | 1,000,000 | 1,000,000 | 500,000 | 500,000 |
| Selling, general and administrative expense | 1,000,000 | 250,000 | 250,000 | 250,000 | 250,000 |
| Depreciation | 500,000 | 100,000 | 100,000 | 100,000 | 200,000 |
| Operating Income (Loss) | 7,000,000 | 4,000,000 | 1,000,000 | 1,000,000 | 1,000,000 |
| Capital Additions | 10,000,000 | 4,000,000 | 2,000,000 | 2,000,000 | 2,000,000 |
| Assets | 147,000,000 | 25,000,000 | 25,000,000 | 47,000,000 | 50,000,000 |